Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Diffusion01:12

Diffusion

220.2K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
220.2K
Diffusion01:21

Diffusion

6.4K
Diffusion is a type of passive transport. In passive transport, a substance tends to move from an area of high concentration to an area of low concentration until the concentration is equal across the space. For example, take the diffusion of substances through the air. When someone opens a perfume bottle in a room filled with people, the perfume is at its highest concentration in the bottle and is at its lowest at the edges of the room. The perfume vapor will diffuse, or spread away, from the...
6.4K
Correlations02:20

Correlations

36.4K
Correlation means that there is a relationship between two or more variables (such as ice cream consumption and crime), but this relationship does not necessarily imply cause and effect. When two variables are correlated, it simply means that as one variable changes, so does the other. We can measure correlation by calculating a statistic known as a correlation coefficient. A correlation coefficient is a number from -1 to +1 that indicates the strength and direction of the relationship between...
36.4K
Correlation and Causation01:27

Correlation and Causation

42.8K
Statistical tests can calculate whether there is a relationship, or correlation, between independent and dependent variables. An indirect relationship of the variables signifies a correlation, while a direct relationship shows causation. If it is determined that no connection exists between the variables, then the correlation is a coincidence.
Correlation versus Causation
If the dependent variable increases or decreases when the independent variable increases, there is a positive or negative...
42.8K
Correlation01:09

Correlation

15.2K
In statistics, two variables are said to be correlated if the values of one variable are associated with the other variable. Depending on the relationship between two variables, correlation can be of three types– positive correlation, negative correlation, and zero correlation.
Two variables, for example, a and b, are said to be positively correlated if both variables move in the same direction. In other words, a positive correlation exists between two variables, a and b, if:
15.2K
2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)01:19

2D NMR: Heteronuclear Single-Quantum Correlation Spectroscopy (HSQC)

1.5K
Heteronuclear single-quantum correlation spectroscopy (HSQC) is a 2D NMR technique that reveals one-bond correlations between hydrogen and a heteronucleus. The HSQC experiment is similar to the heteronuclear correlation experiment (HETCOR) but is more sensitive. In the HSQC spectrum, the proton chemical shift is plotted on the horizontal F2 axis, while the 13C chemical shift is plotted on the vertical F1 axis. The corresponding proton and 13C spectra are also shown. The HSQC contour plot does...
1.5K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Diagnostic criteria for adrenal overt Cushing syndrome: prepared jointly by the Japan Endocrine Society and the Health and Labour Sciences Research Grant (Research on Intractable Diseases) Research Group on Disorders of Adrenal Hormones.

Endocrine journal·2026
Same author

Fulminant type 1 diabetes with high-titer anti-glutamic acid decarboxylase antibodies: Likely rapid progression from stage 2 to 3.

Journal of diabetes investigation·2026
Same author

Defining a serum cortisol cutoff level post-CRH stimulation for diagnosing ACTH deficiency: A retrospective study validated by a nationwide registry.

Frontiers in endocrinology·2026
Same author

Insulinoma with postprandial hypoglycemia and characteristic expression of GLUT2/GCK/GLP-1R.

The Journal of endocrinology·2026
Same author

Consensus on the diagnosis of Cushing's disease: a collaborative statement from the Korean Endocrine Society and Japan Endocrine Society.

Endocrine journal·2026
Same author

Clinical and radiological features of Rathke's cleft cysts with inflammatory change: Multivariable analysis of 262 surgically treated cases.

Clinical neurology and neurosurgery·2026

Related Experiment Video

Updated: Feb 7, 2026

Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
11:43

Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy

Published on: May 10, 2014

11.2K

Two-tag correlations and nonequilibrium fluctuation-response relation in ageing single-file diffusion.

Takeshi Ooshida1, Michio Otsuki2

  • 1Department of Mechanical and Physical Engineering, Tottori University, Tottori 680-8552, Japan.

Journal of Physics. Condensed Matter : an Institute of Physics Journal
|July 21, 2018
PubMed
Summary

This study analyzes correlated Brownian particle motion in channels. A new theoretical framework using vacancy fields resolves inconsistencies with the fluctuation-dissipation theorem, offering insights into equilibrium and non-equilibrium systems.

More Related Videos

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS
10:59

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS

Published on: April 6, 2012

16.7K
Molecular Diffusion in Plasma Membranes of Primary Lymphocytes Measured by Fluorescence Correlation Spectroscopy
12:06

Molecular Diffusion in Plasma Membranes of Primary Lymphocytes Measured by Fluorescence Correlation Spectroscopy

Published on: February 1, 2017

11.5K

Related Experiment Videos

Last Updated: Feb 7, 2026

Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy
11:43

Easy Measurement of Diffusion Coefficients of EGFP-tagged Plasma Membrane Proteins Using k-Space Image Correlation Spectroscopy

Published on: May 10, 2014

11.2K
Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS
10:59

Determination of Lipid Raft Partitioning of Fluorescently-tagged Probes in Living Cells by Fluorescence Correlation Spectroscopy FCS

Published on: April 6, 2012

16.7K
Molecular Diffusion in Plasma Membranes of Primary Lymphocytes Measured by Fluorescence Correlation Spectroscopy
12:06

Molecular Diffusion in Plasma Membranes of Primary Lymphocytes Measured by Fluorescence Correlation Spectroscopy

Published on: February 1, 2017

11.5K

Area of Science:

  • Statistical Mechanics
  • Soft Matter Physics
  • Colloidal Systems

Background:

  • Interacting Brownian particles exhibit complex spatiotemporal correlations.
  • Understanding these correlations is crucial for colloidal systems.
  • Existing theories face challenges with fluctuation-dissipation theorem consistency.

Purpose of the Study:

  • Develop a theoretical framework for analytical calculation of two-particle correlations.
  • Investigate equilibrium and non-equilibrium dynamics of confined Brownian particles.
  • Resolve inconsistencies in closure approximations for nonlinear fluctuations.

Main Methods:

  • Utilized the Dean-Kawasaki equation for density fluctuations.
  • Introduced a label-based Fourier representation of the vacancy field.
  • Analyzed equilibrium and ageing dynamics from equidistant lattice configurations.

Main Results:

  • Established a time-dependent Einstein relation in equilibrium, confirming the fluctuation-dissipation theorem.
  • Demonstrated violation of the time-dependent Einstein relation in ageing dynamics.
  • Derived a non-equilibrium fluctuation-response relation valid for linear and nonlinear fluctuations.

Conclusions:

  • The vacancy field approach offers a consistent theoretical framework for correlated Brownian motion.
  • The study provides new insights into fluctuation-dissipation relations in non-equilibrium systems.
  • The findings are applicable to confined colloidal systems and statistical physics.